/*---------------------------------------------------------------------------*
  Project:  NitroSDK - GX - demos - UnitTours/2D_Oam_2
  File:     main.c

  Copyright 2003,2004 Nintendo.  All rights reserved.

  These coded instructions, statements, and computer programs contain
  proprietary information of Nintendo of America Inc. and/or Nintendo
  Company Ltd., and are protected by Federal copyright law.  They may
  not be disclosed to third parties or copied or duplicated in any form,
  in whole or in part, without the prior written consent of Nintendo.

  $Log: main.c,v $
  Revision 1.33  2004/11/02 09:35:31  takano_makoto
  fix typo.

  Revision 1.32  2004/05/24 10:30:32  takano_makoto
  fixed autotest code

  Revision 1.31  2004/04/07 01:23:27  yada
  fixed header comment

  Revision 1.30  2004/04/06 12:48:06  yada
  fixed header comment

  Revision 1.29  2004/02/24 05:25:21  yasu
  used OS_EnableIrqMask instead of OS_SetIrqMask

  Revision 1.28  2004/02/12 09:33:51  nishida_kenji
  GXOamColor->GXOamColorMode.

  Revision 1.27  2004/02/09 01:44:47  kitani_toshikazu
  added default setting codes for auto testing.

  Revision 1.26  2004/02/05 07:09:02  yasu
  changed SDK prefix iris -> nitro

  Revision 1.25  2004/02/05 01:15:24  kitani_toshikazu
  Added codes for autoTesting.

  Revision 1.24  2004/01/19 02:15:56  nishida_kenji
  fixed comments

  Revision 1.23  2004/01/18 09:20:26  nishida_kenji
  added DEMOStartDisplay

  Revision 1.22  2004/01/18 07:33:33  nishida_kenji
  changed the place of SVC_WaitVBlankIntr

  Revision 1.21  2004/01/14 11:24:30  nishida_kenji
  added G2_OBJMosaic,
  removed GXOamMosaic

  Revision 1.20  2004/01/09 12:02:34  nishida_kenji
  used OS_SetIrqCheckFlag at VBlankIntr()

  Revision 1.19  2004/01/07 09:38:05  nishida_kenji
  revised comments

  Revision 1.18  2003/12/25 11:00:09  nishida_kenji
  converted by GX_APIChangeFrom031212-2.pl

  Revision 1.17  2003/12/17 12:21:36  nishida_kenji
  used DC_FlushRange

  Revision 1.16  2003/12/17 09:00:20  nishida_kenji
  Totally revised APIs.
  build/buildtools/GX_APIChangeFrom031212.pl would help you change your program to some extent.
  $NoKeywords: $
 *---------------------------------------------------------------------------*/

//---------------------------------------------------------------------------
// A sample that rotates an OBJ:
//
// USAGE:
//   LEFT, L: Turn left
//   RIGHT,R: Turn right
//
// HOWTO:
// 1. Set up the character/palette/attribute data same as 2D_Oam_1.
// 2. Set up a matrix by G2_SetOBJAffine().
//---------------------------------------------------------------------------

#include <nitro.h>
#include "DEMO.h"
#include "data.h"

static GXOamAttr sOamBak[128];                             // buffer for OAM

void NitroMain(void)
{
    u16 rotate = 0;

    //---------------------------------------------------------------------------
    // Initialize:
    // They enable IRQ interrupts, initialize VRAM, and make OBJ visible.
    //---------------------------------------------------------------------------
    DEMOInitCommon();
    DEMOInitVRAM();
    DEMOInitDisplayOBJOnly();

    //---------------------------------------------------------------------------
    // Transmitting the character data and the palette data
    //---------------------------------------------------------------------------
    GX_LoadOBJ(d_64_256_obj_schDT, 0, sizeof(d_64_256_obj_schDT));
    GX_LoadOBJPltt(d_64_256_obj_sclDT, 0, sizeof(d_64_256_obj_sclDT));

    MI_DmaFill32(3, sOamBak, 192, sizeof(sOamBak));    // let out of the screen if not display

    DEMOStartDisplay();
    //---------------------------------------------------------------------------
    // Main Loop
    //---------------------------------------------------------------------------
    while (1)
    {
        DEMOReadKey();

        if (DEMO_IS_PRESS(PAD_KEY_RIGHT))
            rotate += 256;
        if (DEMO_IS_PRESS(PAD_KEY_LEFT))
            rotate -= 256;
        if (DEMO_IS_PRESS(PAD_BUTTON_R))
            rotate += 256;
        if (DEMO_IS_PRESS(PAD_BUTTON_L))
            rotate -= 256;
        if (DEMO_IS_TRIG(PAD_BUTTON_SELECT))
            rotate = 0;

        G2_SetOBJAttr(&sOamBak[0],                         // a pointer to the attributes
                      60,                                  // x
                      35,                                  // y
                      0,                                   // priority
                      GX_OAM_MODE_NORMAL,                  // OBJ mode
                      FALSE,                               // mosaic
                      GX_OAM_EFFECT_AFFINE,                // flip/affine/no display/affine(double)
                      GX_OAM_SHAPE_64x64,                  // size and shape
                      GX_OAM_COLORMODE_256,                // OBJ character data are in 256 colors format
                      0,                                   // character name
                      0,                                   // color param
                      0                                    // affine param
                      );

        {
            fx16 sinVal, cosVal;
            MtxFx22 mtx;
            GXOamAffine *tmp = (GXOamAffine *) (&sOamBak[0]);

            sinVal = FX_SinIdx(rotate);
            cosVal = FX_CosIdx(rotate);
            mtx._00 = cosVal;
            mtx._01 = sinVal;
            mtx._10 = -sinVal;
            mtx._11 = cosVal;
            G2_SetOBJAffine(tmp, &mtx);
        }

        // Store the data onto the main memory, and invalidate the cache.
        DC_FlushRange(sOamBak, sizeof(sOamBak));
        
        #ifdef SDK_AUTOTEST
        rotate = 4098;// default params for testing.
        GX_SetBankForLCDC( GX_VRAM_LCDC_C );
        EXT_TestSetVRAMForScreenShot( GX_VRAM_LCDC_C );
        EXT_TestScreenShot( 100, 0x2F6D8647 );
        EXT_TestTickCounter();
        #endif //SDK_AUTOTEST
        
        SVC_WaitVBlankIntr();                              // Waiting for the end of V-Blank interrupt

        GX_LoadOAM(sOamBak, 0, sizeof(sOamBak));
    }
}

//---------------------------------------------------------------------------
// V-Blank interrupt function:
//
// Interrupt handlers are registered on the interrupt table by OS_SetIRQFunction.
// OS_EnableIrqMask selects IRQ interrupts to enable, and
// OS_EnableIrq enables IRQ interrupts.
// Notice that you have to call 'OS_SetIrqCheckFlag' to check a V-Blank interrupt.
//---------------------------------------------------------------------------
void VBlankIntr(void)
{
    OS_SetIrqCheckFlag( OS_IE_V_BLANK );                   // checking V-Blank interrupt
}
